code: def setUpClass(cls) -> None:
      ray.init()
  
imports: import gymnasium
  import numpy
  import unittest
  from typing import List, Optional, Tuple
  import ray
  from ray.rllib.env.multi_agent_env import MultiAgentEnv
  from ray.rllib.env.multi_agent_episode import MultiAgentEpisode
  from ray.rllib.utils.typing import MultiAgentDict
label_desc: Use image node_id 1 for calling the TestMultiAgentEpisode obj's underlying member method code with example usage: obj.setUpClass(cls) without return types